error while updating to Joomla 3.6.0

Question

while updating to Joomla 3.6.0 this error occurred:

Duplicate column name 'last_check_timestamp' SQL=ALTER TABLE #__update_sites ADD COLUMN last_check_timestamp bigint(20) DEFAULT '0' AFTER enabled;

i had the same error while updating to Joomla 3.5.1

what is this? and how can i fix it?

Answer 1

Go into your backend and go to Extensions->Manage->Database

Click the Fix button top left